freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

基礎(chǔ)防雷外文資料翻譯(參考版)

2025-05-17 12:35本頁(yè)面
  

【正文】 Standards The marketplace abounds with exaggerated claims of product perfection. Frequently referenced codes and installation standards are inplete, out dated and promulgated by mercial interests. On the other hand IEC, IEEE, MILSTD, FAA, NASA and similar documents are supported by background engineering, the peerreview process, and are technical in nature. Summary It is important that all of the above subjects be considered in a lightning safety analysis. There is no Utopia in lightning protection. Lightning may ignore every defense man can conceive. A systematic hazard mitigation approach to lightning safety is a prudent course of action. References 1. API 2020, Protection Against Ignitions Arising out of Static, Lightning, and Stray Currents, American Petroleum Institute, Washington DC, December 1991. 2. Golde, ., Lightning, Academic Press, NY, 1977. 3. Hasse, P., Overvoltage Protection of Low Voltage Systems, Peter Peregrinus Press, London, 1992. 4. Hovath, Tibor, Computation of Lightning Protection, John Wiley, NY, 1991. 5. IEEE Std 1100, Powering and Grounding of Sensitive Electronic Equipment, IEEE, NY, NY. 1992. 6. KSCSTDE0012B, Standard for Bonding and Grounding, Engineering Development Directorate, John F. Kennedy Space Center, NASA, 1991. 7. Morris, ., ., RocketTriggered Lightning Studies for the Protection of Critical Assets, IEEE Transactions on Industry Applications, Vol. 30, No. 3, May/June 1994. 8. Sunde, . Earth Conduction Effects in Transmission Systems, D. Van Nostrand Co., NY, 1949. 9. Towne, D., Wave Phenomena, Dover Publications, NY. 10. Uman, Martin, Lightning, Dover Publications, NY, 1984. 。 a F/B of 20 = 4 miles, etc. Since the distance from Strike A to Strike B to Strike C can be as much as 58 miles. Be conservative and suspend activities when you first hear thunder, if possible. Do not resume outdoor activities until 20 minutes has past from the last observable thunder or lightning. Organizations should adopt a Lightning Safety Policy and integrate it into their overall safety plan. Testing Modern diagnostic testing is available to mimic the performance of lightning conducting devices as well as to indicate the general route of lightning through structures. This testing typically is low power, 50 watt or less. It is traceable, but will not trip MOVs, gas tube arrestors, or other transient protection devices. Knowing the behavior of an event prior to occurrence is every businessman39。 stay off the telephone. If caught outdoors during nearby lightning, adopt the Lightning Safety Position (LSP). LSP means staying away from other people, taking off all metal objects, crouching with feet together, head bowed, and placing hands on ears to reduce acoustic shock. Measuring lightning39。 get off the high ground。s products have been tested to rigid ANSI/IEEE/ISO9000 test standards. Avoid lowpriced, bargain products wh
點(diǎn)擊復(fù)制文檔內(nèi)容
畢業(yè)設(shè)計(jì)相關(guān)推薦
文庫(kù)吧 www.dybbs8.com
備案圖鄂ICP備17016276號(hào)-1